| 11499 | |
| 11500 | template <typename FP> |
| 11501 | bool almostEqualUlps(FP lhs, FP rhs, uint64_t maxUlpDiff) { |
| 11502 | // Comparison with NaN should always be false. |
| 11503 | // This way we can rule it out before getting into the ugly details |
| 11504 | if (Catch::isnan(lhs) || Catch::isnan(rhs)) { |
| 11505 | return false; |
| 11506 | } |
| 11507 | |
| 11508 | auto lc = convert(lhs); |
| 11509 | auto rc = convert(rhs); |
| 11510 | |
| 11511 | if ((lc < 0) != (rc < 0)) { |
| 11512 | // Potentially we can have +0 and -0 |
| 11513 | return lhs == rhs; |
| 11514 | } |
| 11515 | |
| 11516 | // static cast as a workaround for IBM XLC |
| 11517 | auto ulpDiff = std::abs(static_cast<FP>(lc - rc)); |
| 11518 | return static_cast<uint64_t>(ulpDiff) <= maxUlpDiff; |
| 11519 | } |
| 11520 | |
| 11521 | #if defined(CATCH_CONFIG_GLOBAL_NEXTAFTER) |
| 11522 | |